Get ready for the last doghouse you'll need to buy: the Habitats Log Cabin Doghouse with Heater. Bringing together the best elements from the top models on the market, this doghouse is a sure thing. Constructed of solid fir wood, this doghouse is weather-resistant. Fir is one of the finest woods you can choose for outdoor use. It resists rot and weather. The roof is particularly important in a doghouse, and that's why this house features weatherproof asphalt shingle. Rain and snow slides right off, keeping your pooch protected inside. The leg protectors of the doghouse are also waterproof, ensuring the wet ground doesn't get into the house's legs or the house itself. Best of all, the Habitats Log Cabin Doghouse is a temperate place for your dog to relax, regardless of the conditions outside. It's designed to be comfortable in every season thanks to the included 150-watt heater. Heater dimensions: 10W x 4.5D x 10.5H inches.Size OptionsLarge:Exterior: 45.6W x 30.9D x 32.1H inchesInterior: 41.3W x 25.6D x 26H inchesDoor: 15W x 21.7H inchesMedium:Exterior: 40.8W x 26D x 27.6H inchesInterior: 36.6W x 22.2D x 21.7H inchesDoor: 13W x 16.5H inchesSmall:Exterior: 33.7W x 22.6D x 23H inchesInterior: 29.5W x 18.9D x 17.1H inchesDoor: 9.5W x 13.4H inches